package com.controller;

import com.util.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

@Slf4j
@RestController
@RequestMapping("/common")
public class CommonController {

    @Value("${reggie.path}")
    private String basePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file){
        String filename = file.getOriginalFilename();
        String s1 = filename.substring(filename.lastIndexOf("."));
        String s = UUID.randomUUID().toString()+s1;
        File file1 = new File(basePath);
        if (!file1.exists()) {
            file1.mkdirs();
        }
        try {
            file.transferTo(new File(basePath+s));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return R.success(s);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response){

        try {
            FileInputStream stream = new FileInputStream(new File(basePath + name));
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");
            int len =0 ;
            byte[] bytes = new byte[1024];
            while ((len = stream.read(bytes))!=-1){
                outputStream.write(bytes,0,len);
                outputStream.flush();
            }
            outputStream.close();
            stream.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}
